Brother Innov-is NX600, Руководство по обслуживанию

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6 - 6
Repair Manual
13 • Needle
contact noise
Noise of contact between needle
and outer rotary hook
• Bad needle interference
adjustment
Adjust needle interference (4-12)
• Loose needle interference
adjustment screw
Adjust needle interference (4-12)
• Release
sound
Needle bar hook stand coming
off
• Needle bar hook stand
damaged
Replace needle bar hook stand
• Release lever bent Replace release lever
14 Threading not
possible.
Thread pushed out at the hook
end. Threading
function Confirm that when
threading is carried out
with Schappe Spun
Sewing Thread #60 /
#11 needle and
Schappe Spun Sewing
Thread #30 / #16
needle, that the
threading lever moves
smoothly and that
threading through the
needle hole is possible.
• Vertical slippage in needle
thread block
Readjust the needle thread
block
(4-29)
Hook extends right of the needle
hole
• Wide gab between right side
of needle and hook guide
Replace hook assy. (3-49)
• Needle curvature Needle replacement
• Needle slant (hole slant with
slanted attachment of
needle block)
Replace needle bar (3-54)
• Threader hook assy.
slippage
Replace hook assy. (3-49)
• Vertical slippage in needle
thread block
Readjust the needle thread
block
(4-29)
Does not go into needle hole
because of hook tip curvature. Replace hook assy. (3-49)
Threading impossible even
though hook goes into needle
hole.
• Thread lost from hook guard
B
Replace hook assy. (3-49)
• Because of bad hook spring
shape, the thread is pushed
out at the hook tip
Replace hook assy. (3-49)
• Hook spring operation is
tight, so the thread cannot
be held and the thread is
pulled from the needle hole
again.
Replace hook assy. (3-49)
• Thread lost from threader
disk
Replace needle bar supporter
assy.
(3-51)
When the threader
lever returns, it
stops part way
through. Threader shaft tangling Replace needle bar supporter
assy.
(3-51)
Bad thread guide shape Replace hook assy. (3-49)
Hook guide and hook release
plate touch Replace hook assy. (3-49)
Bad needle thread lever shaft
shape Replace lever guide shaft (3-51)
Needle thread shaft and top gap
too small Replace needle bar supporter
assy.
(3-51)
Problem Primary factors and causes Repair method Items for
Inspection
Inspection method
and standards